RESULTS

(9)

FILTER

DISEASE: Carrot yellows

HOST: Carrot

Flowers with shoot proliferation (witches’-broom) (left). Healthy flower (right). Virescence and phyllody of flower parts are common.

Carrot yellows | Carrot

DISEASE: Carrot yellows

HOST: Carrot (Daucus carota)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: M. Schroth

DISEASE: Carrot yellows

HOST: Carrot

Carrot with proliferation of roots. Initial symptoms include yellowing and narrowing of veins of young leaves. The entire leaf later becomes necrotic.

Carrot yellows | Carrot

DISEASE: Carrot yellows

HOST: Carrot (Daucus carota)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: G. S. Abawi

DISEASE: Center rot

HOST: Onion

Early symptoms of disease are necrotic, bleached areas on young leaves that typically wilt.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: R. Gitaitis

DISEASE: Center rot

HOST: Onion

Advanced stage of center rot. The bacterium has moved down from leaves into the bulb.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: H. Schwartz

DISEASE: Center rot

HOST: Onion

Bulb with pale yellow, discolored decayed area.

Center rot | Onion

DISEASE: Center rot

HOST: Onion (Allium cepa)

PATHOGEN: Pantoea ananatis

SOURCE: H. Schwartz

DISEASE: Oleander knot

HOST: Oleander

Oleander with small knots/galls on leaf and stems.

Oleander knot | Oleander

DISEASE: Oleander knot

HOST: Oleander (Nerium oleander)

PATHOGEN: Pseudomonas savastanoi pv. nerii

SOURCE: W. Sinclair

DISEASE: Oleander knot

HOST: Oleander

Young stem with knots/galls.

Oleander knot | Oleander

DISEASE: Oleander knot

HOST: Oleander (Nerium oleander)

PATHOGEN: Pseudomonas savastanoi pv. nerii

SOURCE: R. Raabe

DISEASE: Oleander knot

HOST: Oleander

Leaf with early stage of knot/gall formation.

Oleander knot | Oleander

DISEASE: Oleander knot

HOST: Oleander (Nerium oleander)

PATHOGEN: Pseudomonas savastanoi pv. nerii

SOURCE: R. Raabe

DISEASE: Oleander knot

HOST: Oleander

Infected flowers with small knots/galls and necroses.

Oleander knot | Oleander

DISEASE: Oleander knot

HOST: Oleander (Nerium oleander)

PATHOGEN: Pseudomonas savastanoi pv. nerii

SOURCE: W. Sinclair